20pcs/lot Relay HRS4HSDC12V 4pins 10A A practical bulk pack of compact electromagnetic relays designed for reliable on/off control in 12V DC systems. Each relay in this 20piece lot uses a 12V DC coil and provides a 10A contact rating through a 4pin configuration — a convenient, costeffective choice for , replacement, prototyping, and smallscale production. Why you need it Reliable switching: Controls loads up to 10A safely, isolating control circuits from highercurrent circuits to protect sensitive electronics. Ready for repairs and projects: A 20piece lot ensures you have spares on hand for maintenance, batch builds, or iterative prototyping without repeated reordering. Compact, straightforward design: The 4pin form factor simplifies wiring and integration into many control circuits and relay sockets. Key features and attributes Model: HRS4HSDC12V Quantity: 20 pieces per lot Coil voltage: 12V DC Pins: 4pin configuration Contact rating: 10A switching capability Functionality: Electromechanical relay for switching DC/lowvoltage AC loads Form factor: Compact 4pin arrangement for simple wiring or socket installation Performance focus: Designed for repeated switching in control and automation applications Benefits and problem solving Protects control electronics: The relay provides electrical isolation between lowvoltage control signals and highercurrent loads, preventing direct current flow through delicate controllers. Saves time and cost: Buying in a 20pack reduces perunit cost and keeps a consistent supply for multiple devices or ongoing projects. Simplifies maintenance: Standard 4pin relays are quick to in the field, minimizing downtime. Typical applications Automotive and vehicle systems: Switching auxiliary lighting, fans, pumps, or other 12V accessories where a 10A rating is sufficient. Home automation and DIY electronics: Relay modules for controlling lights, small motors, or actuators from microcontrollers and control panels using a 12V control signal. Industrial control and small machinery: Control circuits and control panel replacements where compact, reliable 12V relays with up to 10A capacity are required. Installation and usage tips Confirm coil voltage: Apply 12V DC to the coil to activate switching; do not exceed rated coil voltage. Respect the contact rating: Use the relay for loads within the 10A contact rating and apply proper fusing for safety. Check pin layout: Verify pin orientation and wiring before applying power to ensure correct switching behavior. Allow for heat dissipation: Install with adequate spacing in assemblies handling continuous currents near the rating. What's included 20 units of HRS4HSDC12V 4pin relays, each rated for 10A switching. this 20piece lot when you need a dependable supply of compact 12V relays for repairs, projects, or production runs.